Method of and means for translating sounds



May 26, 1925.

R. E. HALI METHOD 0F AND MEANS FOR TRANSLATING SOUNDS Filed May' 8, 19222 Sheets-Sheet 1 [Five/wor:

#faq

Cfi

ll l) Patented May .26, 1925.

unirsi) STATES PATENT OFFICE.

RAY E. HALL, OF ROCK ISLAND, LLNOIS, ASSIGEOR TO HALL RESEARCH CORPORA-Tl'ON, OF CHICAGO, ILLXNOS, A CORPORATION OF DELAWARE.

METHOD OF AND lill-73.011353 Application filed May 8,

To all fio/tom t 'may cm1-ecru: l

,lle it known that l, Pny 11am., a citizen ot' the United States.residing at Rock lslanih in the county ot Rock lsland and State ol`illinois have invented certain neuT and use'ltul lniproveinents'inMethods o1" and Means for 'llranslating` Sounds, oi" which the'following is a specilication.

llhe object ot this` invention is broadly to improve upon thesubject-matter ot my prior llatents No. .1,160,012 granted November 9,1915. No. 1.205,53() `grafnteil November 2l, 191e, and No. 1.378.315grantel liflfay 17, 1921.

One iinntieular object oit' the invention is to give the diaphragm orother movable medium a more steady and larger motion und to eliminate'tluttering f A itin-ther object ot the invention is to increase thesensitivcness oit the relay by rausing;- the contacts to open oricloseupon a change of direction of the n'iovable medium distinguished 'from achange o1" position. .fr Al'iuther object of the invention is to providemeans tor regulatingthe pressure.

iii the fluid used in the jet.

A ilf'urther object of' the invention to produce a compact deviceen'ibodjvingI the principles in a torni that can be manufactured atrelatively small cost.

Further objects ot the invention will become apparent as the descriptionis read in connection with the accompanyingl drawing in which Fig. l isa plan view of the invention, parts of the cover being broken away vrforthe purpose ot better illustration;

lilies. t. and fl are vertical sections on the lines and 'l--I- olf Fig.1` respectively; and

F il is a diagrammatic view illustrating one use ot the invention. i

Referring to the drawings 1() indicates a box or easing` having;suitable baltens 11 secured to the top and bottoni adapted to re-` ceivescrews or other as'teningsflier holdine' the plate 12 thereto in theposition indicated in Figs. 2 and 3. Secured to the side of this plateis a pair oit tanks 13 and 14 adapted to receive the fluid ttor 'formingthe jet. Hhe 'fluid enters the` tank 1S Yfrom a pump or bloiverl throughthe ypipe 16 which extends al substantial distance into the tank asindicated in Figx. The tanks 133 and lf-il are connected by a U-shapedtube 17 .evR TRANSLATNG SOUNDS.

1922. serial No. 559,170.

having its ends extending well into the tanks away t'rom the side Wallsto prevent sound vibrations t'roin being` transmitted from one tank tothe other through thev tube. A .similar tube 18 connects the tank 111with the nozzle 19 'for forming` the The tank 11 is equipped with anoutlet 20 leadingl through the `plate 12 over which lies a flat valve 21adapte-dto be adjusted by the screw 22 to permit more or less fluid topass through the outlet. ly closing' this passage the pressure is madeto rise in the tank 111 and consequentlv7 the jet 'formed by the nozzle19 will be varied. In order to indicate the pressure in the tank 14 sothat proper adjustments may be made l provide a manometer 23 which hereshown in the :torni oli` a horse shoe shaped tube 211- having thecouneet-ion 25 extending' into the tank 14. The horse shoe shapedportion ot this tube lies over a .scale 2G supported on the front sideot the plate 12 which may bear any sort of graduations. As illustratedthe graduations consist ol" horizontal lines suitably spaced apartandone ot the lines is marked zero. By .filling the tube untilboth sides ofthe horse shoe are at the level of the zero niark. suitable readings canbe made upon the pressure in the tank 11 to permit the valve 21 to beadjusted to suit the particular needs of different situations. p

Alongside the tanks 13 and 141 a frame 27 is secured to the plate 12 and'forms a support for a sound producing device suoli as a Wirelessreceiver 28 and 'for the nozzle 19. The wireless receiver 28 includes adiaphragm 2S) which is connected by a funnel 30 with the jet 31.Preferably, the nozzle 19 is equipped with a cylindrical passage 32 at.

its end which gives the `iet a cylindrical form, and the tunnel 30 ispreferably conical at the discharge end. The relation between the tip otthe nozzle 19 and the tunnel 30 can be varied somewhat but the bestresults will be had when the axis ot the funnel is substantially itiushwith the extreme end o1 the nozzle.

The jet S1 is ,here shown 'acting upon a diaphragm formed or" thin sheetrubber held to the outside of the plate 12 by the ring 31 through whichthe screws 341 pass into the plate. Between the act-ive portion oit thediaphragm and the plate 12 is interposed a disk 35 having' a dish-shapedtace presented to the diaphragm; the back of the disk is flat and maylie flush against the face of the plate 12. As shown the disk isequipped with a tube 36 passing through the boss 37 on the trame 27 andadjustably secured in place by the screw 38. The end of the tube 36 isequipped with a bracket 39 carrying a baille 40 spaced somewhat from theend of the tube 36 and provided with a port 41. It is particillarlyimportant that the passage 42 in the tube 36 be larger than the port 41and the passage 32 in the nozzle. Preferably the port 41 and the passageare substantially the same size. lVhen the diaphragm 29 of the wirelessreceiver is at rest the jet will proceed from the nozzle 19 through Vtheport 41 and the tube 86 and impinge upon the 'rear side of the diaphragm32. lVhen a signal is received by the wireless receiver the jet willassume varying phases as the sound wav-es are inr pressed upon it, ofwhich the dotted lines in F 2 indicate one form. lVhen the jet isundisturbed it passes through vthe battle and the passage 42 anddistends the diaphragm 33 but when it assumes som-e such form asindicated practically none of the iluid goes through the port 41 andhence the pressure against the diaphragm 33 is relieved permitting` itto assume normal, substantially `flat position, or move in thatdirection an amount depending upon the duration of the signal@I Aresilient arm 43 is secured to the ring 84 by the screw 44 and extendsover the dia.- phragm to approximately th-e middle where it is tit-tedwith a cap of insulating' material 45. Adjacent to this cap is anangular conductor 46 having a contact 47 at the end thereof spaced fromthe insulating' cap 45. A yielding plate 48 is `also secured to the ringby the screw 44 and may be pressed down by the screw 49 to adjust thespring arm 43 downwardly towards the diaphragm.

Cooperating with thel contact 47 Vis a movable contact 5() carried by api'voted arm 51 which has a lateral bearing 52 mounted in the bracketsecured to the ring 34. This bracket has an arm 54 extendingsubstantially parallel to the arm 51 and carrying a spring 55 whichcontacts with 4the pivot bearing 56 that is approximately aligned withthe bearing 52. The arm 51 adjacent to the bearing 52 is provided with aflat face 57 adapted to have frictional engagement with the side 'faceor" the bracket. A screw 58 threaded through the end vof the arm 54 andbearing againstthe end of the spring 56 can be adjusted 'to change thepressure between the face 47 and the bearing ltio vary the friction tobe overcome in moving the arm 51.

By mounting the arm 51 in this manner it will tend to remain in anyposition of adjustment. Consequently, when the diapliragu'g` has movedin one direction until the spring arm 43 has engaged the arm 51 eitherwith the cap 45 or the contact 47, a chan-ge in direction of movement onthe part of the diaphragm will cause the arm 43 to shift its engagementto the other side of the arm 51, or to close or open a circuit.

In other words the making or breaking of contact between the conductingsurfaces 47 and 50 will be controlled by a change ot' direction in themovement of the diaphragm as distinguished from a change ol position.

The resilient` arm 43 i-s connected by a wire 59 with a binding post 60,and the arm 51 i-'s connected to a binding post 61 through a Vwire 62, aswitch 63 and a second wire 64. The switch 63 has an arm G5 which maymake contact with the post 66 to which the wire 62 is connected or thedead post 67 t'o turnv the apparatus on or olf. In order to 'take careof any surge of current, the post 66 is connected to the post G0 througha coil. 68 as .indicated in dotted lines in Fig. 1. The bindingposts and61 may be used to connect the apparatus with a recorder 70, or the like,as indicated on the diagram in Fig. 4. These binding posts arepreferably carried on a cover of insulating material 71 secured to,` theCasin0r 10 by the bolts 72. Binding posts 7-3 and i4 are also mounted onthe cover and aiiord fastening for the cables 715 and 76 by which thewireless receiver may be connected with a receiving set 77.

By passing 'the jet through an enlarged passage like that shown at 42and interposing the battle 40 adjacent to the end of the passage thepressure against the diaphragm is immediately relievedA as soon as thejet takes the VVform that will not pass through the port 414. The morethe fluid in the jet is disturbed the less 'the fluid will pass throughthe port 41 and the more will be the relief of the pressure on the`diaphragn'i. This makes the device much more steady and sensitive andat the same time eliminates ll'i'itte'ring, which sometimes occurs. Bycombining this arrangement with the jockey arm 51, which gives l'aloating Zero mark, the apparatusbecomes extremely accurate and sensitivegiving very quick and prompt changes corresponding with the signa-lsreceived through the wireless apparatus or other sound devices actingthrough the funn'el 39.. The baille 49 should be spaced a suicient'distance from the end ol the tube 36 to permit the fluid acting'against the Vdiaphragm to escape freely as soon as the jet is disturbedso vthat the bulk of the fluid strikes the baiiie or dissipates 'itselfabout the ytrame 27 instead of passing through the port 41 leading tothe diaphragm. By making the passage 42 relatively large the escape ofthe Huid isl rendered easy and quick and the diaphragm is permitted toquickly change its direction, thereby making or breaking the contact ofthe relay.

ducting and non-conducting surfaces on said contact, a movable contactbetween said conducting and non-conducting surfaces, a pivoted armcarrying said movable 'conta-ct, and adjustable friction devices forresisting movement of said pivo'ted arm.

l2. The combination of a movable medium, means for directing a varyingjet against said medium, a resiliently mounted contact moved by saidmedium, spaced conducting and non-conducting surfaces on said contact, amovable contact between said conducting and non-conducting surfaces, apivoted arm carrying said movable conta-ct, and a friction device actingon said arm to resist pivotal movement thereof.

13. The combination of a diaphragm, means for directing a jet againstsaid diaphragm, a tube having a relatively large passage therein throughwhich said jet passes to said diaphragm, a bairle spaced from the end ofsaid tube in the path of said jet, means for impressing' sound waves onsaid jet, a resiliently mounted contact moved by said diaphragm, and apivotally mounted contact moved by said resiliently mounted Contact.

Ill. The combination of means for producing a jet including a nozzle,means for impressing sound waves on lsaid jet adjacent to the nozzle, atube having a relatively large lpassage aligned with said jet andcommunicating with a diaphragm chamber, a diaphragm across saidchamber,- a baffle interposed between said tube and said nozzle having arelatively small passage for said jet, a resiliently mounted contactcooperating with said diaphragm, va floating contact cooperating withsaid resiliently mounted Contact, andfri'ction devices adapted to resistany movement of sai-d lloating contact.

15. A relay comprising a source of fluid under pressure, a plurality oftanks, and connections between the tan :s including tubes vextendinginwardly from the walls of the tanks.

1G. A relay comprising a source of Huid under pressure, a plurality ofconnected tanks, one of said tanks having` an outlet and a valve forregulating the flow from sai-d outlet.

1T. il. relay comprising a 'source of fluid under press-ure, a pluralityof 'connected tanks, the tank remote from said source having an outlettherein., a valve for con*- trolling said outlet, and means forindicating the fluid pressure in said remote tank.

18. A relay comprising a source of fluid under pressure, a plurality oftanks,.means for connecting the tanks, the tank remote from the sourcehaving an outlet and a valve for contro-lling said outlet, and amanome-ter for indicating the pressure inv said remote tank.

119. A relay comprising a casing, a plurality of tanks in said casing,means for connecting Vthe tanks together, means for coune'cting` one ofsaid tanks with a source oill fluid under pressure, an outlet 'for oneol said tanks, means projecting through said casing for controlling saidoutlet, and a nianometer for reading the pressure in said tank having anoutlet, said Ycasing having` an openingl through `whichsaid manometer isvisible,

20. The method of making sounds of relatively small volume readilyperceptible which lconsists in subjecting :a movable niedi-um to theaction of a fluid jet directed through a passage ol relatively greatarea, impressing sound vibrations on said jet to produce varying phasesand battling certain phases 'of said jet adjacent to the entrance to thepassage.

j 21. The method of making sounds of relativelyr small volume readilyperceptible which `consists in` impressing the-m upon a sensitive jetdirected against a movable medium, and controlling` the flow of Icurrentin an electric circuit by changes in the direction of movement of saidmedium.

22. The method of making sounds of relatively small volume readilyperceptible whi'ch 'consist-s in impressing them upon a sensitive jet,directingr the jet against a inevable medium through aligned passagesof' different size, and controlling` the flow of current in an electriccircuit by changes in direction in the movement of said medium,

23. The method of making sounds of rela' tively small volume readilyperceptible which consists in impressing them upon a sensitive jetadapted to assume varying phases under the energy of the impressedsounds, directing the jet through aligned pas ages of diiterent sizesagainst a movable medium, and operating a relay by changes in directionin the movement of said medium.

9A. The combination of means for produc- .ing a jet including a nozzle,means for impressing sound Waves on said jet adjacent to the nozzle, amovable medium spaced from said nozzle, and meansA between said movablemedium and said nozzle providing aligned passages of different diametersfor said jet.

RAY E. HALL.

lill)

